US2907854A - Electric switches - Google Patents

Electric switches Download PDF

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Publication number
US2907854A
US2907854A US724141A US72414158A US2907854A US 2907854 A US2907854 A US 2907854A US 724141 A US724141 A US 724141A US 72414158 A US72414158 A US 72414158A US 2907854 A US2907854 A US 2907854A
Authority
US
United States
Prior art keywords
contact
switch
elements
electric switches
bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US724141A
Other languages
English (en)
Inventor
Firman Reginald Arthur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vickers Armstrongs Aircraft Ltd
Original Assignee
Vickers Armstrongs Aircraft Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vickers Armstrongs Aircraft Ltd filed Critical Vickers Armstrongs Aircraft Ltd
Application granted granted Critical
Publication of US2907854A publication Critical patent/US2907854A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H13/00—Magnetic resonance accelerators; Cyclotrons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/20—Contact mechanisms of dynamic converters
    • H02M1/28—Contact mechanisms of dynamic converters incorporating electromagnetically-operated vibrating contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2814/00—Indexing codes relating to loading or unloading articles or bulk materials
    • B65G2814/03—Loading or unloading means
    • B65G2814/0301—General arrangements
    • B65G2814/0314—General arrangements for moving bulk material downwards
    • B65G2814/0319—General arrangements for moving bulk material downwards through a closable or non-closable outlet opening
    • B65G2814/032—General arrangements for moving bulk material downwards through a closable or non-closable outlet opening using a belt or chain conveyor in or beneath the opening

Definitions

  • the invention has reference to electric switches of the type in which the respective contacts are constituted by two bar-like elements disposed substantially at right angles to each other, one of such contacts being traversed along the face of the other contact to complete a circuit through the same.
  • a switch of the, specified type the foregoing disadvantages are avoided by an arrangement wherein one of the switch elements, conveniently though not necessarily the stationary element, is sub-divided longitudinally into a plurality of members of convex cross-section which are electrically connected but independently supported at each end in a pre-tensioned condition, with capability of individual resilience, so as severally to make virtual point-to-point contact with a transversely disposed bar element having a convex contact face.
  • FIG. 1 is a side elevation of the switch showing the operative relationship of the moving and stationary elements
  • Fig. 2 is a front elevation of the stationary contact-element alone.
  • Patented Oct. 6, 1959 101 so that a plural of lengths of metal wire 11 of convex (i.e. circular) cross-section may be assembled and located as shown, the wires being successively slid sideways into the slots and retained in position by a keepplate 102.
  • the end 111 of each wire 11 is bent as shown over a separate member 12, so that when the latter is fixed in position on the holder 10, the parts 111 are pretensioned at upper and lower ends.
  • the moving contact-element is a bar 13 disposed substantially at right angles to the length of the wire sections 11. It may be adapted for rectilinear movement in relation to the wire sections 11, or, as in the embodiment illustrated, it may be mounted on an arm 14 which pivots about an axis 15 so that the bar 13 is caused to traverse the parts 112 of said wire sections in the direction of the arrow, bearing against each section individually.
  • Such an arrangement which provides virtually point-topoint contact between the switch elements, and wherein the individual sections 111 of the stationary switch element 11 are free to flex as the bar 13 moves over any irregularities in their surfaces, gives the maximum pressure between the contacts for any given pre-tension, this pressure assisting in maintaining the contact surfaces in a clean condition.
  • the current flowing through the switch is divided between the several sections 111 throughout the stroke of the bar 13, the lower current per section giving a high contact efficiency, and a small arc at break.
  • the arrangement whereby the sections 111 are pretensioned at each end facilitates regulation of the contact pressure and, together with the fact that the individual sections 11 are of low mass and constrained by the holder 12, tends to avoid bounce at break when the switch is operated at high frequency.
  • a switch of the kind described in which one of the elements is sub-divided into a plurality of electrically connected individually resilient members each of which is of convex cross-section and is independently supported at its ends, in. a prestressed condition, a bar element having a convex contact face, means for mounting said bar element transversely to the resilient members for relative movement therealong with the convex contact face in virtual point-to-point contact with said resilient members, and means for supporting said resilient members with the ends thereof free for movement.
  • a switch according to claim 1 in which said transversely disposed bar element is pivoted about an axis which is at right angles to the said members.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Contacts (AREA)
  • Push-Button Switches (AREA)
US724141A 1957-04-12 1958-03-24 Electric switches Expired - Lifetime US2907854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11727/57A GB833038A (en) 1957-04-12 1957-04-12 Improvements in electric switches and contact arrangements therefor

Publications (1)

Publication Number Publication Date
US2907854A true US2907854A (en) 1959-10-06

Family

ID=45023936

Family Applications (1)

Application Number Title Priority Date Filing Date
US724141A Expired - Lifetime US2907854A (en) 1957-04-12 1958-03-24 Electric switches

Country Status (6)

Country Link
US (1) US2907854A (xx)
BE (1) BE566613A (xx)
DE (1) DE1094852B (xx)
FR (1) FR1194392A (xx)
GB (1) GB833038A (xx)
NL (1) NL104484C (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10238661B3 (de) * 2002-08-23 2004-02-26 Lumberg Connect Gmbh & Co. Kg Elektrische Kontaktiervorrichtung, insbesondere zur Verbindung einer Spannungsquelle mit einer elektronischen Schaltung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE134748C (xx) *
FR592873A (fr) * 1924-04-16 1925-08-11 Alsacienne Constr Meca Galet de contact électrique
FR33332E (fr) * 1926-12-21 1928-09-26 Alsacienne Constr Meca Galet de contact électrique
DE694556C (de) * 1937-11-24 1940-08-03 Siemens & Halske Akt Ges insbesondere fuer hoehere Belastungen
US2520258A (en) * 1945-06-28 1950-08-29 Ralph R Pittman Secondary breaker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1694864U (de) * 1954-12-28 1955-03-17 Elektro Starkstrom Appbau Krav Schaltkontakt, insbesondere fuer schaltgeraete mit messerkontakten.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE134748C (xx) *
FR592873A (fr) * 1924-04-16 1925-08-11 Alsacienne Constr Meca Galet de contact électrique
FR33332E (fr) * 1926-12-21 1928-09-26 Alsacienne Constr Meca Galet de contact électrique
DE694556C (de) * 1937-11-24 1940-08-03 Siemens & Halske Akt Ges insbesondere fuer hoehere Belastungen
US2520258A (en) * 1945-06-28 1950-08-29 Ralph R Pittman Secondary breaker

Also Published As

Publication number Publication date
NL226448A (xx) 1958-04-01
DE1094852B (de) 1960-12-15
GB833038A (en) 1960-04-21
BE566613A (xx) 1960-07-29
FR1194392A (xx) 1959-11-09
NL104484C (xx) 1963-04-16

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